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A
For billing
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B
Because some medications thin or sensitize the skin, and waxing could tear or damage it
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C
To choose wax color
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D
It does not matter
Why this is the answer
Knowing whether a client uses certain skin medications — such as some prescription exfoliating or acne treatments — is important before waxing because these can thin or sensitize the skin, making it prone to lifting, tearing, or injury when wax is removed. In such cases waxing may be contraindicated, and the client should consult their physician. This is why a consultation and intake questions precede hair removal. Recognizing medication-related contraindications for waxing is a key safety point in the hair-removal content of the exam.
Source: Skin & Nails — Waxing Contraindications